Since these foreign investors only have dollars and the CBN's securities are denominated in naira, the CBN takes their dollars and exchanges it to naira for them.
Ebe ọ bụ na ndị ọchụnta ego ndị a si mba ọzọ nwere naanị dollar na ego mkpuchi nke CBN na naira, CBN na-ewere dollar ha ma gbanwere ya nye naira maka ha.